22 Nov
2013
22 Nov
'13
1:36 a.m.
On Thu, Nov 21, 2013 at 07:22:31PM +0000, Will Godfrey wrote:
Thank you both for your suggestions. I tried that bit
of code, but as I rather
expected it behaved perfectly.
The problem seems to be that, for some reason FLTKs 'step' command is being
ignored. Not only is it failing to round the values but it is also failing to
truncate them. I even tried replacing the calculated value with a simple
integer - loads of trailing zeros after the decimal point.
Yoshi is derived from Zyn, and the section of code that sends values to FLTK
for display is identical, yet Zyn doesn't show this problem. I can only guess
there is some difference in the way yoshi links to FLTK but can't imagine what
it is!
I'm noticing a possible bug generator in a diff between
`ZynAddSubFX-2.4.3' and `yoshimi-1.1.0':
diff -u ZynAddSubFX-2.4.3/src/UI/ADnoteUI.fl \
yoshimi-1.1.0/src/UI/ADnoteUI.fl | grep lrintf
+ callback {pars->VoicePar[nvoice].PVolume = lrintf(o->value());}
+ callback {pars->VoicePar[nvoice].Presonance = lrintf(o->value());}
[...]
!! | wc -l
72
The method `value' of Fl_Valuator returns a "double" and `lrintf'
requires "float".
The implementation of `lrintf' depends on the machine (for example, in
glibc-2.15, it uses the instruction CVTSD2SI for x86_64).
You could try `lrint' or the follow trick:
http://music.columbia.edu/pipermail/music-dsp/2013-September/071566.html